According to FAA Passenger Info you can take tweezers and nail clippers in carry-on. Metal scissors are restricted from carry-on. I overheard someone going through the random check the other day with blunt-tip scissors, but I didn't see if they were metal or not.
Dreams Unlimited Travel is committed to providing you with the very best vacation planning experience possible. Our Vacation Planners are experts and will share their honest advice to help you have a magical vacation.